2.5", Flange mount, NEMA 4, Class I DIV II, double bearing with shaft seal, 80 lb shaft load, Optical Incremental, Programmable from 1 to 1024 count, 5-30V power, 5-30V output, Side connector, 7-pin Single Line Quadrature Incremental Encoder with Index, with Mating connector, Standard Aluminum case